1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418ecc6788b7185d5b3773cc3bda2b0526bd4c00b63783512477225102b360ee. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f5b5858-6e1a-483b-b449-f280cbe617df.json and https://artists.proofprofile.net/proofs/artist/1f5b5858-6e1a-483b-b449-f280cbe617df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2947c84346bc32eeff28828459884af345e761ab81e027f096e44fabe845f56. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABU1406127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05a7c7d3e88b7bdcb77094f797ce40887912ca5839d3bdaffdc78c05d2e8456. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABU1406129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf29d5fbf354f2ef256b1f3917faee9b4c975425a3cb4526abba82223e8262b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABU1407292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a746792a335c8d73556c8af3f3f8fec765179ad4e776a4210cb309805c3837. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABU1463436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854be1790ece1e395d7458d64075c0672ed4ccff9480541920ce810e4de91782. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1518564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df810b2f49b2b2fe997732281817d4c3b3b89d4e90526a554acb35c2813bc54. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1518565.
Voy a Rompe (feat. Secreto El Famoso Biberon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc865882954e769c110fca86793bd129ccaad3ed150c308744ab6eedf85fe62. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1518567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916aac759256d2d900e1399f3472b815f0e80947d9177fc0ff802e6199567500. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1518569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195182300dd37a9510b240e6f65685da492e8301ac2c0ec75580e4dfd9009ae7. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1518572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb21438b1e26c9647f5c49626eff86a9e0ad027f0fd93324fe046ffb6894ca37. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1518575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6b67a774a7ad8405e1799908b6924fd3f668a4c9c620f62399bb249c480050. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1518578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48a5f3a4ebc9fba71b1e683f00a60188754f5066d1e6959d7ec56f02153979b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1518584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe518c2ab1d5ec65ceaea124be4e4e5860687eb07aacfd064a552fd4b77a8ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACF1518586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b6f716d25c899ac4fc1664865fd2ca5c58aff6319de045ba906c3cd08b2ed3. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACT1698300.